Type-writer.



C. N. KOCH.

TYPE WRITER.

APPLICATION FILED MAR. 13, Ian.

1,258,688. Patented Ma1n12, 1918 4 SHEETS-SHEET l.

INVENTOR c. N" KOCH.

TYPE WRITER. APPLICATION FlLED MAR. is. m2.

1 ,258,688. Patent/ed Mar. 12, 1918 4 SHEETS-SHEET 3.

fly 4/.

5 1 46 4F 44. La 43 r I (NVENTOR C. N. KOCH.

TYPE WRITER.

APPLICATION FILED MAR. 13 I91].

Patented Mar. 12, 1918.

4 SHEETS-SHEET 4.

inn "ED STATES PATENT I OFFICE.

cHAnLEs n. xocn or KANE, PENNSYLVANIA.

TYPE-WRITER.

Specification of Letters Patent.

Patented Mar. 12, 1918.

Application filed March 13, 1917. Serial No. 154,431

' construction of mechanism which can be 1; applied to any desired orconventional type f typewriter for cfiectmg the .automntlc 'returnlofthe pa er carriu eito its'initial "ositionl hen ii; asrea he ,the-e d-ofthe .1 j ine or en predetennined point in its travel;

. {It 'furtlien qonsists of novel -;carriage If? A 1' i ,versin eeh aniwhich is conneclged-tqo end --w "e i s;. 1 mi .io ri' flelly- 'm htmhave. printeglthereon.

'erlcqri sistso "w h e is qn ,duringnthe normal ioperatio'nof 'tljeltype- "writer." 86 Other novel feirtures'of construction and advantagewill hereinafter more clearly .v pp n e le es p ion. f my vent-ion. e 1*i p I For the pnrpose of illnstreting my; invention, 11mm;ehownwingthea'ccpmpa'nyin drawingsfin typical embodiment thereo which 151M; presentpreferred .by me; inc hi embq ime "wi we r i b ee, ro h itis to inure-"wae'xleeu imami a al es .b'fifihl my pe -ea en q s sj n .be mauen. 3 ,dmd And my invenpion is notlhni -to the' Ere- :cise. arrangementfnnd-orgenizat 1on of It Bee in. iin'strnmentalit ea' jii's" herem I shownnmj do "QFfggre '1 represents a sectlonal elevation of a typewriter-en'xhhdymg my invention,

t novel rneens inpaper-31 m: frope i new...

' Y S1m lerf 'innrneralsio g correspond ngI in gnems Qth'e releareturnaf the-platen carr ofthe ,tension" device 'connectedthereto' hrinteg'i' arm 8,110 which is pivots y connected one end of a link 9, theother end-of said linkgive in raietice satis '15 cernes. a worm 16 whicthe section being taken on the line 11 of Fig. '2.

Fig. 2 represents a top plan view of a portion of a typewriter, certainparts havin been omitted for the sake of clearness o illustration.

Fig. 3 represents a sectional plan view on 1ine3-3 of Fig. 1. I

ig. 5 represents a sectional view .on line 55 of Fig. 4.

Fig. 6

66.ofF1g. i4.

Fig. 7 represents Fig, 8 represents a. man ev' tiqn of a ortion of thetreckearrigge" F g ,9 r presen s reel; shah end-fa.

Referring. to the ,d ya. '5

1 mre d thi jf ey a leYe1- 6 which is f-ul "1e ej' rod journaled in' the'hoi1sing. -;;Eajchflever'fi has e1 therewith an hein pivotallyconnected po e. lewl'ectuating ever 10,-wl1ich is fnlci'lilii hill-1. 12designates 'arsprin actuatedpziwl carried by the lever 10 an I ratchetwheel 13, The lever 10. also carries a spring actuated pawl 14clzfiperatin with the ratchet wheel 13 and serving use etent. Theratchet wheel 13 ismountedonashaft l5 iournaledin the housing, landthis, shaft lrneshesz with a worm wheel-17, which is loosely mounted ona, vertically disposed shaft 18 journ aled in the honsing of themachine.

n per-f Ice of the worm wheel 17 is provide fwith the clutch teeth 19which cooperate .wlth the. teeth of a clutch member 20, which is keyedto the shaft 18 by means represents a sectionel .view on linecoiipsrnting with g Fig. gt represents a section on line 4-4 of i of ther85 21 so that" the clutch'member 20 is longitudinally slidable on theshaft 18 beingsecured to the le 1 37 designates a tape and rotates inunison therewith.

22 designates a disk fixed to the shaft 18 and interposed between thisdisk and the clutch member 20 is aspring 23. The shaft 18 has securedtoits upper end a friction disk 24 which is in frictional engagementwith a disk 25 mounted on a shaft 26 journaled in the housing l. Thefriction disks 24 and 25 are preferably surrounded by a split ring 27.

28 designates a clutch collar loosely mounted on the shaft 26 andconnected by means of a clutch arm 29 with the tension release lever 6,as will be best understood by reference to Figs. 1 and 4. 30 designatesa tension device which is provided with a side dish 31 rotatable onthe'clutch collar 28v and secured to a ring 32 by means.

of fastening devices 33. The outerperiphcry .of the 32 is provided withthe annular slots or grooves 34 and 35, respec- 'is provided near itsouter periphery with the radial grooves 89, with the walls of is fixed.to the shaft 26 "at 49 in reference to adapted is, loosel which one endof a rod' 40 is adapted to The other end of the rod 40' is to interlockwith the walls of the disk 42, which engage.

radial grooves 41 of 'a locking I mounted on the shaft 26' and isprovide with a gear 43 which inter-meshes with the idlers 44, which arerotatably mounted on a stationary plate 45 secured to the housing byfastening devices 46. The idlers 44, mesh with an internal' gear 47forming a part of the ring 32.

48 designates a spring, one end of which any desired manner, and theouter end of said spring is connected to the locking rod 40 which iscarried by an arm 50 fixed to the clutch sleeve 28, as will be bestunderstood by cured thereto in any desired manner a ratchetdisk 51, theteeth of which coiiperate with the ratchet teeth 52 formed in the hub ofa handle 53, which latter is loosely mounted on the shaft 26, therebyroviding for the manual winding up of t e spring 48, if such action atany time becomes necessary.

The clutch releasinglever 6 is provided with a pin 54 which passesthrough a slot carriage 36.'

ig. 4. Theshaft 26 has se-' 55 in an arm 56, which latter is secured toa rock shaft 57 journaled in the housing 1. The rock shaft 57 isprovided with an arm 58 see Fig. 1, which isprovided with a roller 59adapted to bear against a rod or bar 60 which s supported on a rockshaft 61.

62 designates a spring, one end of which is connected with the rod orbar 60, and

its otherend isflfixed 'to a stationary point of the housing. The rockshaft 61 has its ends journaled in the platen carriage 36 and has apolygonal contour which is slidable in a similar shaped aperture in theupper end of the bar 60. Secured to the rock shaft 61 at one end is anarm 63 which is providcd with a slot 64 at its upper end and into thisslot extends a pin 65 carried by a plunger 66, on which latter ispivotally mounted a spring actuated double pawl 67 which engages theteeth of the ratchet 68. in order to advance the platen 69.

In order to revent the type on a type bar 4 from beingroughtintoengagement with the platen or the aper thereon during' thereverse travel of t e platen carriage due to the accidental operation ofone of the keys, Irprovide a guard or buffer 70rwhich is; s 1

able in, a stationary guide 71, and the lower end of such member 7 0(passes through f a slot 72 inan arm '73 the to the lower end of the bar60.. The lower end-"of the guard or buffer 70 is provided with -a member7 4 and the bar 70 terminates in an arm 75 between which andthe arni 73is interposed a spring 76. Fixed to the ho'using of the machine in theusual manner is a notched bar 77, see Figs. 1 and 8, on which isslidable a shoe 78 having apin 79 which 15 adapted to contacta stop 81on the platen with a tension device 82. The stop arm' has its lower enddeflected at an angle and adapted to engage the clutch arm 29 in orderto move he latter downwardly.

forms a friction band, one end of the sections of which are pivotallyoonhected as at 83, and the opposite endsare adapted to have" passedthrough them an adjusting screw. 84' which is provided with a nut 85', btween which and one of said ends is interposed a spring 86.

The operation of my novel typewriterwill now be.a arent and is asfollows g The or m'ary key-board is operated in the asses through a stoparm 80, with which The stop arm 80' provided The split ring or..band 27,see Fig. 7,

usual manner and during such operation the automatic winding up of thespring 48 of the tension device 30 is elfected due to the actuation orthe arms 8- and the pawls 12- and 14, it being understood that each oneof the key levers s provided with an arm 8 and its ad uncts. If the.operator desires to return the carriage to its initial or startingposition, the key 5' is pressed downwardly,

end of the bar 60 laterally, thereby "jjng to its adjustment. .ment ofthe bar 60, the

thereby causing the clutch rod 29 to move the locking rod 4.0 out ofengagement with the 'walls of a groove 39 and into engagement-with thewalls of a groove 41, and owing to the provision of the gear 43, theidlers'44 and the internal gear t7, the ring .32 of the tension device30 will revolve in a reverse or unwinding direction and cause the platencarriage to be returned to its initial or starting position.

.VVhen the key 5 is pressed downwardly to effect the return of theplaten carriage to its initial position, the rock shaft 57 is actuatedto cause the roller 59 to move the lower rocking the arm 63 and causingthe pawl 67 to advance the platen one or more spaces accord- During thismovebufler 70 is moved up into position in front of the platen so thatin case the operator should accidentally actuate one of the regular keysof the kegboard, the type on its type bar would str the buffer and wouldnot come into engagement with the paper ,on the platen. By adv: justingthe position of the shoe 79, the clutch rod 29 can .be actuated to bringthe platen carriage to a stopat any desired point. durits'return to itsstarting position. 30

f-at any time it is desired to increase the tensiomof the spring,. thiscan be accomplished manually by actuating the handle 53 fin; the properdirection, as is apparent.

' which will give in mcrated as desirable in It will nowobe apparentthat I have devised a novel; and useful typewriter, which embodies thefeatures o'f advantage enuthe statement of the inventionrandthe abovedescription, and in the present instance, shown a typical embodimentthereof practice satisfactory and it is to be understood that anddescribe reliable results, this embodiment is susceptible ofmodificzv Ition-in various particulars without departing from the spirit or scopeof the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new ters Patent, is7 .1. Inv a typewriter, a platen carriage, a tension device therefor tomove it in either direction, andcomprising a ring having a plurality oftapes connected therewith and with said carriage, 'a disk havin radialgi-ooves and secured to said ring, a isk having radial grooves andintergeared with said ringto eflfect its rotation in a reversedirection, a winding shaft, a sprin having one end-fixed to said shaft,a 100. ing member carried by the other end of said spring and adapted tointerlock with the walls of a groove of one or the other of said rings,and a key-controlled'clutch connected with said locking member.

2. In a typewriter, a platen carriage, a tenof tapes connected therewithposits ends of, said carriagq-a J disk fs'ecurod to said ring, asecond'disk, a-wind-' shaft,

and desire to secure by 'Letsion device therefor to move it in eitherdirection, and comprising a ring having a plurality of tapes connectedtherewith and with said carriage, a disk having radial grooves andsecured to said ring, a disk having radial rooves and intergeared'with'said ring to e set its rotation in a reverse direction, a windingshaft, a spring havin one end fixed to said shaft, a locking mom s!carried by the other end of said s ring and'adapted to interlock withthe wal sof a groove of one or the'other of said rings,',akey-controlled clutch connected with said locking member, and meansactuated by said-carr age toreturn said clutch to its initial positionand cause said locking member to interlockjwith a groove of the ringsecured to the disk,

3. In a typewriter, aplaten'carriagemrrd a tension device therefor,comprising a-'winding shaft, a spring connected therewith, a groovedring, tapes having-1 one end secured in their, respective groovesofgjsaidr' and secured to said carriage, a L'meInberjz-Jmtergeared withsaid shaft to cause it toirotate,

ina reverse-direction, a locl n'n member car-g ried at the free end ofsaid "spr ng imd jadapted to interlock'with said rmgbr with saiddirection, i ie. prisin h gfi llow' in.-

u e ies;-.'ia-nngplu a gear thereon, idlers inter-geared iwlth said gearand, with saidjring,';aa. springi-fixed to saidshaft, a locln'ng freeend of said spring and adipted-tdinterloclr with either disk, and a"lever operatively connected ing member to actuate it. '5. In atypewriter, a'ca "age and-a tension device therefor comprisin' thefollowing instrumentalities' a win ing shaft, a gear thereon, a disklavin'g-"idlers m'eshin with said gear andjntergearod with 'sai ring, adisk fixed to said nag, ta secured to said rin ends oi sai carria asprin" having one end fixed to said 'g aft, 11 10c member secured to theother end of mid sprin and it an 106kada ted to interlock withvon'e orthe 0t er of sai disks, a key-controlled lever operatively connectedwithsaid lockin member to actuate it,'a'nd means controll by con trolledmeans to advance the laten' 'uring the reverse morement. of sai platencarand connected wi. opposite he. wnti'olled mechanism connecting saidfing and 'said shaft and looselymounted on said winding shaft,fand meansto connect the free end of said spring vwith said ring or with saidreversing mechanism. v A

7; In a-typewriter, a platen carriage, a

, sectional "winding shaft, frictional means ,engaging said sections, aspring having one end Secured tosaid shaft, a rotatable ring 10connected to said platen carriageto move ffit .inr either direction,reversing mechanism havin f 'I J p nBected-witli saidwinding sha arotamembfenon said winding shaft, a platen member to be and means toconnect said spring with said otatable member 'or. said revers- Inaitypewriter, a sectional. winding vice lcgiiperatin therewith, a

riagai'centrolled y said tension evice, key

-de'vioe, reversing mechamsm adapted to 4 foi m 'a connection betweensaid tension device and said winding shaft and loosely on the latter,and key-controlled {means to cause said tension device to cooperatedirectl with said shaft, or with said througli said reversing mechanism.46; 10. In a typewriter, a windin shaft, a

tension device cooperating therewith, a platen -carriage controlled bysaid tension device,- a friction drive for said shaft to in- 4"1crease-the tension'of said tension device and ;ikey,-controlled,reversing mechanism adaptform a connection between said ten-.fsion-fdevice and said winding shaft and 1 5 3 mounted on the latter,key-controlled 'ineans to'cause said tension device to coopfib, cratedirectly with said shaft, or with said shaft through .saidjreversingmechanism, a

means to advance said (platen during in eitlierfdirectiom-reversmgmechaftii-frictionally connected, a tension delaten car;

controlled means to revolve said winding increase the tension of saidtension Y the return movement of sai riage. t v

" 11. In a typewriter, a winding shaft, a tension device cooperatingtherewith, a platen carriage controlled by said tensiondevice, afriction drive for said shaft to increase the tension of said tensiondevice and key-controlled, reversin mechanism adapted to form aconnection tween said tension device and said'winding shaft and looselymounted on the latter, key-controlled means to cause said tension deviceto cooperate diplaten carrectly with said shaft, or with .said shaftthrough said reversing mechanism, a platen, the type, and means actuatedby said keycontrolled means to prevent the type being inoved intooperative relationship with the platen during the return movement of theplaten carriage.

12. In a typewriter, a winding shaft, a plaa reverse movement to it,reversing mechanisrn loosely mountedon said winding shaft andintergeared with said ring, a sto on said carriage, an armlongitudinally a ustable with respect to said stop and positioned in thepath of said stop, means actuated by said arm to move the free end ofsaid spring control thejtravel of said platen carriage in its reversemovement, and key-controlled means to release said springto effect areverse movement of said carriage,

13. In .a ty ewriter, a platen carriage, a winding1 sha havin tensionmeans, a s ring aving one an connected with said s aft, ar' connectedwith said platen carriage to impart a direct or a reverse movement toit, reversin mechanism loosely mounted on said win ing shaft andintergearefifwith said ring, a shoe adjustable with respect' to saidcarriage, a spring pressed arm car'ried b said shoe, a stop on saidcarrings to engage said arm, means actuated by said arm'to operate thefree end of said spring 'to control a predetermined lengthof travel ofsaid platen carriage in its reverse movement thereof, and key-controlledmeans to release said tension means to effect the reverse movement ofsaid carriage.

CHARLES N. Keen.

Witnesses:

J. J. WnLoH, W. Connms.

ten carriage, a spring having one end connected with said shaft,-a ringconnected with said platen carriage to'impart a forward or

